LBitmap::GetMinMaxVal

#include "ltwrappr.h"

virtual L_INT LBitmap::GetMinMaxVal(puMinVal, puMaxVal)

L_UINT L_FAR * puMinVal;

/* address of the variable to be updated */

L_UINT L_FAR * puMaxVal;

/* address of the variable to be updated */

Returns the minimum and maximum intensity values present in a 12 or 16-bit grayscale or a 48 or 64-bit color image. This function is available in Document/Medical toolkits only.

Parameter

Description

puMinVal

Address of a variable to be updated with the minimum intensity value present in the bitmap.

puMaxVal

Address of a variable to be updated with the maximum intensity value present in the bitmap.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

The minimum and maximum values can be used to create a lookup table, for use in LBitmap::WindowLevel or LBitmap::WindowLevelBitmap.

This function supports 12 and 16-bit grayscale images. Support for 12 and 16-bit grayscale images is available only in the Document/Medical toolkits.

This function supports signed data images.

Required DLLs and Libraries

LTDIS
LTFIL
LTIMG

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:

LBitmap::GetMinMaxBits, LBitmap::WindowLevel, LBitmap::WindowLevelBitmap, Class Members

Topics:

Raster Image Functions: Palettes

 

Grayscale Images

 

Color Halftones and Halftone Images

 

Raster Image Functions: Working with Color Halftones, Halftones, and Grayscale Images

 

Raster Image Functions: Processing an Image

Example

LBitmap LeadBitmap;
   L_INT nLowBit, nHighBit;
   L_TCHAR szDummyBuffer[50];

   LeadBitmap.Load(TEXT("image1.cmp "), 0,ORDER_BGR);
   if(
      ((LeadBitmap.IsGrayScale()!=GRAY_NO)&&
      ((LeadBitmap.LBitmapBase::GetBitsPerPixel()==12)||
      (LeadBitmap.LBitmapBase::GetBitsPerPixel()==16)))
     )
   {
      LeadBitmap.GetMinMaxVal(&nLowBit, &nHighBit);
      wsprintf(szDummyBuffer, TEXT("LowBit= %d\tHighBit= %d"), nLowBit, nHighBit);
      MessageBox(NULL, szDummyBuffer, TEXT("GetMinMaxBits"), MB_OK);
   }
   else
      MessageBox(NULL, TEXT("Not a (12 or 16) gray scale image."), TEXT("GetMinMaxBits"), MB_OK);